Possible Clues:

• Air that's more usually seen in cheerleaders
• Notes motorway going around America is top class
• 'If ... be the food of love, play on'(Twelfth Night)
• I reckon to retire with 100 to score
• Let's face it - it's barred!
• Notes sound on 1 down, say, almost unfit
• CCMA word
• Audible art form ...
• Noise coming from staff?
• Greek character�s thus in art